Statistics

Front

What is an outlier?

Back

A value that is much higher or much lower than the other values in a set of data.

Front

What type of sampling method did Marianne use when she surveyed the first 30 students who came into her class?

Back

Convenience sampling.

Front

How do you calculate the median of a data set?

Back

Arrange the data in order and find the middle value.

Front

What is the median of the data set: 6, 7, 12, 8, 4, 7, 8, 8, 7?

Back

7.

Front

What is standard deviation?

Back

A measure of the amount of variation or dispersion in a set of values.

Front

How do you calculate the standard deviation of a data set?

Back

Find the mean, subtract the mean from each data point, square the results, find the average of those squares, and take the square root.

Front

What is the standard deviation for the data set: 3, 20, 13, 12, 12?

Back

5.40.

Front

What is the mean of a data set?

Back

The average of all the values in the data set.

Front

How do you calculate the mean of the data set: 6, 7, 12, 8, 7, 4, 8, 8, 7?

Back

Add all the values together and divide by the number of values.

Front

What is the mean of the data set: 6, 7, 12, 8, 7, 4, 8, 8, 7?

Back

7.44.